CN113580588A - Processing technology of extrusion type RTP composite pressure pipe fitting - Google Patents
Processing technology of extrusion type RTP composite pressure pipe fitting Download PDFInfo
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- CN113580588A CN113580588A CN202110927542.3A CN202110927542A CN113580588A CN 113580588 A CN113580588 A CN 113580588A CN 202110927542 A CN202110927542 A CN 202110927542A CN 113580588 A CN113580588 A CN 113580588A
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- Prior art keywords
- pipe fitting
- resistance wire
- pipe
- melt adhesive
- hot melt
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- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 238000001125 extrusion Methods 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 73
- 239000004831 Hot glue Substances 0.000 claims abstract description 38
- 238000002844 melting Methods 0.000 claims abstract description 30
- 230000008018 melting Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000003292 glue Substances 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 8
- 229920001903 high density polyethylene Polymers 0.000 claims description 7
- 239000004700 high-density polyethylene Substances 0.000 claims description 7
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 6
- 239000012943 hotmelt Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a processing technology of an extrusion type RTP composite pressure pipe fitting, which comprises the following steps: step one, extruding an RTP composite pressure pipe: the PE material is fed into the extruder in a negative pressure mode, the PE material is heated, and then the inner layer of the pipe is extruded, the resistance wire is wound on the outer surface of a heating cylinder in hot melting equipment in a spiral winding mode firstly, hot melt adhesive is dripped on a glue dripping channel, the spiral winding resistance wire is shaped, so that a resistance wire insert is formed, the resistance wire insert is placed into the pipe fitting through the hot melting equipment, the resistance wire insert is bonded with the inside of the pipe fitting in the hot melting mode, the hot melt adhesive is waited to be cooled, the resistance wire is shaped in advance, the resistance wire insert is conveniently fed into the inside of the pipe fitting, the softness degree of the resistance wire does not need to be considered, and then the resistance wire insert is fixed in the hot melting mode, the operation is simple, and the speed is high.
Description
Technical Field
The invention relates to the technical field of composite pressure pipe fittings, in particular to a processing technology of an extrusion type RTP composite pressure pipe fitting.
Background
The pipe plays an important role in conveying the medium, however, pure steel pipes and pure plastic pipes have unsatisfactory places, the former is affected by corrosion, and the latter is insufficient in strength and pressure-bearing capacity, so that the composite pipe becomes two points of research, reinforced thermoplastic composite pipes (RTP) are one of the two, and the electric melting pipe fittings need to have certain resistance to corrosion and certain bearing pressure.
At present, the RTP composite pressure pipe fitting is extruded and formed, a resistance wire needs to be placed into the pipe fitting subsequently, and the resistance wire is relatively soft and the diameter of the pipe is relatively small, so that the speed is relatively low and the operation is relatively troublesome when the pipe fitting is prepared.
Disclosure of Invention
The invention aims to provide a processing technology of an extrusion type RTP composite pressure pipe fitting.
The purpose of the invention can be realized by the following technical scheme: a processing technology of an extrusion type RTP composite pressure pipe fitting comprises the following steps:
step one, extruding an RTP composite pressure pipe: feeding a PE material into an extruder in a negative pressure mode, heating the PE material, extruding the inner layer of the pipe, winding a reinforcing belt on the inner layer of the pipe at the moment with constant tension to form a reinforcing layer, co-extruding the inner layer and the outer layer of the pipe, sizing after extrusion, and then spraying, cooling and forming;
step two, shaping and cutting: cutting the formed pipe into pipe fittings with fixed length;
step three, prefabricating resistance wire inserts: winding the resistance heating wire on hot melting equipment in a spiral mode, then coating a layer of hot melt adhesive on the outer surface of the resistance heating wire, and taking the resistance heating wire out of the surface of the shaping pipe after the hot melt adhesive is cooled, so as to obtain a resistance wire insert;
step four, mounting the resistance wire insert: the resistance wire insert is arranged on the inner surface of the pipe fitting in a hot melting mode through hot melting equipment.
In a further aspect of the present invention, the PE material is high density polyethylene HDPE.
As a further scheme of the invention, the reinforcing tape is formed by plying and weaving fiber yarns, and the reinforcing tape is wound on the surface of the inner-layer pipe at an inclination angle of 50-55 degrees.
As a further scheme of the invention, the heating temperature of the PE material is 150-220 ℃.
As a further scheme of the invention, the rotating speed of the screw extrusion of the inner layer of the pipe fitting is 60-80 r/min.
As a further scheme of the invention, the diameter of the resistance wire insert is smaller than the inner diameter of the pipe fitting.
As a further scheme of the invention, the hot melting equipment comprises a support frame, wherein a placing groove is formed in one side of the top of the support frame, a fixed cylinder is fixedly connected inside the placing groove, a support plate is arranged on the other side of the top of the support frame, a rotating groove is formed in the support plate, an object placing groove is fixedly connected to the inner surface of the rotating groove, a heating cylinder is rotatably connected to the inner surface of the object placing groove, a plurality of glue dripping channels are formed in the outer surface of the heating cylinder, a threaded sleeve is arranged on one side of the support plate in a penetrating manner, a threaded rod is connected to the inner surface of the threaded sleeve in a threaded manner, a fixed plate is fixedly connected to one side of the top of the support frame and positioned on the right side of the support plate, a driving motor is fixedly connected to one side of the fixed plate, and the output end of the driving motor is fixedly connected with one end of the threaded rod;
through holes are formed in one side of the supporting plate and located on the front side and the rear side of the threaded sleeve, sliding rods are connected to the inner surfaces of the through holes in a sliding mode, one end of each through hole is fixedly connected with one side of the supporting frame, and the other end of each through hole is fixedly connected with one side of the fixing plate;
the front surface of the supporting plate is provided with a rotating motor, the output end of the rotating motor is fixedly connected with a rotating gear, the outer surface of the heating cylinder is provided with a gear ring, and the outer surface of the rotating gear is meshed with the outer surface of the gear ring;
the internal surface of a fixed section of thick bamboo is provided with the heating collar, the surface of a fixed section of thick bamboo is provided with a plurality of stopper, the top threaded connection of stopper has spacing bolt, the bottom of spacing bolt is rotated and is connected with the kicking block, the bottom of stopper has been seted up and has been put the thing groove.
As a further scheme of the invention, the use method of the hot melting equipment comprises the following steps: firstly, the heating wire is wound on the outer surface of the heating cylinder in a spiral mode, then hot melt adhesive is dripped at the position of the adhesive dripping channel, so that the hot melt adhesive on the surface of the heating wire is solidified, thereby forming a resistance wire insert, meanwhile, the pipe fitting is sent into the inside of the fixed cylinder, the top block is pushed out from the inside of the object placing groove by rotating the limiting bolt and is contacted with the outer surface of the pipe fitting, thereby fixing the pipe fitting in the inside of the fixed cylinder and being fully contacted with the heating ring, at the moment, the driving motor is started, the driving motor drives the threaded rod to rotate, thereby enabling the supporting plate to slide above the supporting frame, and the sliding rod slides in the through hole, further enabling the resistance wire insert on the heating cylinder to be inserted in the pipe fitting, then the heating cylinder and the heating ring are connected with an external power supply, thereby enabling the heating cylinder and the heating ring to heat the hot melt adhesive on the surfaces of the pipe fitting and the resistance wire insert, the motor is rotated in the start-up this moment for rotating gear rotates, thereby drives the cartridge heater and rotate at the internal surface of putting the thing groove through the meshing relation of rotating gear and ring gear, through dripping the gluey way with even the scribbling of hot melt adhesive at the internal surface of pipe fitting, wait for the hot melt adhesive cooling shaping after, take out the pipe fitting can.
The invention has the beneficial effects that:
(1) according to the processing technology of the extrusion type RTP composite pressure pipe fitting, the resistance wire is wound on the outer surface of the heating cylinder in the hot melting equipment in a spiral winding mode, the hot melt adhesive is dripped on the adhesive dripping channel, so that the spiral wound resistance wire is shaped to form the resistance wire insert, the resistance wire insert is placed into the pipe fitting through the hot melting equipment, the resistance wire insert is bonded with the inside of the pipe fitting through the hot melting mode, the hot melt adhesive is cooled, the resistance wire insert is conveniently fed into the inside of the pipe fitting through the mode of shaping the resistance wire in advance, the softness degree of the resistance wire is not needed to be considered, and the resistance wire insert is fixed through the hot melting mode.
(2) The invention relates to a processing technology of an extrusion type RTP composite pressure pipe fitting, which can realize that a heating cylinder on a supporting plate is conveyed into the interior of the pipe fitting by arranging a driving motor in a hot melting device to drive a threaded rod to rotate, can improve the stability of the supporting plate during movement by arranging two sliding rods, is provided with a glue dripping channel outside the heating cylinder to drip hot melt glue at the position of the glue dripping channel, can ensure that the height of the hot melt glue is not higher than that of the heating cylinder, so that the hot melt glue can be completely inserted into the interior of the pipe fitting, a limit bolt on a limit block can enable a top block to be inserted into and prop against the outer wall of the pipe fitting by rotating the limit bolt, so that the pipe fitting is limited, and the rotating motor is arranged to drive a gear ring to rotate through a rotating gear, so as to drive the heating cylinder to rotate, and redundant hot melt glue can be uniformly coated on the surface of a resistance wire insert through the glue dripping channel, thereby the stable inside of fixing at the pipe fitting of resistance wire inserts that makes, solve the problem that the resistance wire inserts is difficult to fix the inner wall at the pipe fitting through this structure.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic flow diagram of a process for manufacturing an extruded RTP composite pressure pipe of the present invention;
FIG. 2 is a schematic view of the external structure of the heat-fusible device in the present invention;
FIG. 3 is a side view of the structure of the exterior of the support plate of the present invention;
fig. 4 is a side view showing an outer structure of the fixed cylinder in the present invention.
In the figure: 1. a support frame; 2. a fixed cylinder; 3. a support plate; 4. a heating cylinder; 5. a glue dripping channel; 6. a drive motor; 7. a threaded sleeve; 8. a threaded rod; 9. a through hole; 10. a slide bar; 11. a fixing plate; 12. rotating the motor; 13. a rotating gear; 14. a ring gear; 15. a rotating groove; 16. rotating the sleeve; 17. a limiting block; 18. a limit bolt; 19. a top block; 20. and (4) heating the ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the following two embodiments are provided:
example 1
The invention relates to a processing technology of an extrusion type RTP composite pressure pipe fitting, which comprises the following steps:
step one, extruding an RTP composite pressure pipe: feeding a PE material into an extruder in a negative pressure mode, heating the PE material, extruding the inner layer of the pipe, winding a reinforcing belt on the inner layer of the pipe at the moment with constant tension to form a reinforcing layer, co-extruding the inner layer and the outer layer of the pipe, sizing after extrusion, and then spraying, cooling and forming;
step two, shaping and cutting: cutting the formed pipe into pipe fittings with fixed length;
step three, prefabricating resistance wire inserts: winding the resistance heating wire on hot melting equipment in a spiral mode, then coating a layer of hot melt adhesive on the outer surface of the resistance heating wire, and taking the resistance heating wire out of the surface of the shaping pipe after the hot melt adhesive is cooled, so as to obtain a resistance wire insert;
step four, mounting the resistance wire insert: the resistance wire insert is arranged on the inner surface of the pipe fitting in a hot melting mode through hot melting equipment.
In the invention, the PE material is high density polyethylene HDPE.
According to the invention, the reinforcing belt is formed by stranding fiber yarns, and is wound on the surface of the inner-layer pipe at an inclination angle of 55 degrees.
In the invention, the heating temperature of the PE material is 220 ℃.
In the invention, the rotating speed of the screw extrusion of the inner layer of the pipe fitting is 80 r/min.
In the invention, the diameter of the resistance wire insert is smaller than the inner diameter of the pipe fitting.
In the invention, the hot melting equipment comprises a support frame 1, a placing groove is formed in one side of the top of the support frame 1, a fixed cylinder 2 is fixedly connected in the placing groove, a support plate 3 is arranged on the other side of the top of the support frame 1, a rotating groove 15 is formed in the support plate 3, the rotating groove 15 is used for placing a rotating sleeve 16, the rotating sleeve 16 is fixedly connected to the inner surface of the rotating groove 15, a heating cylinder 4 is rotatably connected to the inner surface of the rotating sleeve 16, the heating cylinder 4 is connected with an external power supply, so that the surface of the heating cylinder 4 generates heat capable of melting hot melt adhesive, a plurality of glue dripping channels 5 are formed in the outer surface of the heating cylinder 4, the glue dripping channels 5 can uniformly smear the hot melt adhesive, a threaded sleeve 7 penetrates through one side of the support plate 3, and a threaded rod 8 is connected to the inner surface of the threaded sleeve 7 in a threaded manner, a fixing plate 11 is fixedly connected to one side of the top of the support frame 1 and the right side of the support plate 3, a driving motor 6 is fixedly connected to one side of the fixing plate 11, and the output end of the driving motor 6 is fixedly connected with one end of a threaded rod 8;
through holes 9 are formed in one side of the supporting plate 3 and the front side and the rear side of the threaded sleeve 7, sliding rods 10 are connected to the inner surface of the through holes 9 in a sliding mode, the sliding rods 10 are arranged, the stability of the supporting plate 3 during moving can be improved, one end of each through hole 9 is fixedly connected with one side of the supporting frame 1, and the other end of each through hole 9 is fixedly connected with one side of the fixing plate 11;
the front surface of the supporting plate 3 is provided with a rotating motor 12, the output end of the rotating motor 12 is fixedly connected with a rotating gear 13, the outer surface of the heating cylinder 4 is provided with a gear ring 14, the outer surface of the rotating gear 13 is meshed with the outer surface of the gear ring 14, and the heating cylinder 4 can rotate through the meshing of the rotating gear 13 and the gear ring 14, so that the hot melt adhesive in the adhesive dripping channel 5 can be poured out and uniformly coated on the surface of the resistance wire insert;
the internal surface of a fixed section of thick bamboo 2 is provided with heating ring 20, the surface of a fixed section of thick bamboo 2 is provided with a plurality of stopper 17, the top threaded connection of stopper 17 has stop bolt 18, stop bolt 18's bottom is rotated and is connected with kicking block 19, rotation cover 16 has been seted up to stop 17's bottom.
In the invention, the use method of the hot melting equipment comprises the following steps: firstly, the electric heating wire is wound on the outer surface of the heating cylinder 4 in a spiral mode, then hot melt adhesive is dripped at the position of the adhesive dripping channel 5, so that the hot melt adhesive on the surface of the electric heating wire is solidified, and a resistance wire insert is formed, meanwhile, the pipe fitting is sent into the fixed cylinder 2, the top block 19 is pushed out from the inside of the rotating sleeve 16 by rotating the limiting bolt 18 and contacts with the outer surface of the pipe fitting, so that the pipe fitting is fixed in the fixed cylinder 2 and fully contacts with the heating ring 20, the driving motor 6 is started at the moment, the driving motor 6 drives the threaded rod 8 to rotate, so that the support plate 3 slides above the support frame 1, the sliding rod 10 slides in the through hole 9, the resistance wire insert on the heating cylinder 4 is further inserted into the pipe fitting, and then the heating cylinder 4 and the heating ring 20 are connected with an external power supply, thereby make cartridge heater 4 and heating collar 20 heat the hot melt adhesive on pipe fitting and resistance wire inserts surface, start rotating motor 12 this moment, make rotating gear 13 rotate, thereby drive cartridge heater 4 and rotate at the internal surface of rotating sleeve 16 through the meshing relation of rotating gear 13 with ring gear 14, through dripping gluey way 5 with the even internal surface of paining at the pipe fitting of hot melt adhesive, wait for the hot melt adhesive cooling shaping after, take out the pipe fitting can.
Example 2
The invention relates to a processing technology of an extrusion type RTP composite pressure pipe fitting, which comprises the following steps:
step one, extruding an RTP composite pressure pipe: feeding a PE material into an extruder in a negative pressure mode, heating the PE material, extruding the inner layer of the pipe, winding a reinforcing belt on the inner layer of the pipe at the moment with constant tension to form a reinforcing layer, co-extruding the inner layer and the outer layer of the pipe, sizing after extrusion, and then spraying, cooling and forming;
step two, shaping and cutting: cutting the formed pipe into pipe fittings with fixed length;
step three, prefabricating resistance wire inserts: winding the resistance heating wire on hot melting equipment in a spiral mode, then coating a layer of hot melt adhesive on the outer surface of the resistance heating wire, and taking the resistance heating wire out of the surface of the shaping pipe after the hot melt adhesive is cooled, so as to obtain a resistance wire insert;
step four, mounting the resistance wire insert: the resistance wire insert is arranged on the inner surface of the pipe fitting in a hot melting mode through hot melting equipment.
In the invention, the PE material is high density polyethylene HDPE.
According to the invention, the reinforcing belt is formed by stranding fiber yarns, and is wound on the surface of the inner-layer pipe at an inclination angle of 50 degrees.
In the invention, the heating temperature of the PE material is 150 ℃.
In the invention, the rotating speed of the screw extrusion of the inner layer of the pipe fitting is 60 r/min.
In the invention, the diameter of the resistance wire insert is smaller than the inner diameter of the pipe fitting.
In the invention, the hot melting equipment comprises a support frame 1, a placing groove is formed in one side of the top of the support frame 1, a fixed cylinder 2 is fixedly connected in the placing groove, a support plate 3 is arranged on the other side of the top of the support frame 1, a rotating groove 15 is formed in the support plate 3, the rotating groove 15 is used for placing a rotating sleeve 16, the rotating sleeve 16 is fixedly connected to the inner surface of the rotating groove 15, a heating cylinder 4 is rotatably connected to the inner surface of the rotating sleeve 16, the heating cylinder 4 is connected with an external power supply, so that the surface of the heating cylinder 4 generates heat capable of melting hot melt adhesive, a plurality of glue dripping channels 5 are formed in the outer surface of the heating cylinder 4, the glue dripping channels 5 can uniformly smear the hot melt adhesive, a threaded sleeve 7 penetrates through one side of the support plate 3, and a threaded rod 8 is connected to the inner surface of the threaded sleeve 7 in a threaded manner, a fixing plate 11 is fixedly connected to one side of the top of the support frame 1 and the right side of the support plate 3, a driving motor 6 is fixedly connected to one side of the fixing plate 11, and the output end of the driving motor 6 is fixedly connected with one end of a threaded rod 8;
through holes 9 are formed in one side of the supporting plate 3 and the front side and the rear side of the threaded sleeve 7, sliding rods 10 are connected to the inner surface of the through holes 9 in a sliding mode, the sliding rods 10 are arranged, the stability of the supporting plate 3 during moving can be improved, one end of each through hole 9 is fixedly connected with one side of the supporting frame 1, and the other end of each through hole 9 is fixedly connected with one side of the fixing plate 11;
the front surface of the supporting plate 3 is provided with a rotating motor 12, the output end of the rotating motor 12 is fixedly connected with a rotating gear 13, the outer surface of the heating cylinder 4 is provided with a gear ring 14, the outer surface of the rotating gear 13 is meshed with the outer surface of the gear ring 14, and the heating cylinder 4 can rotate through the meshing of the rotating gear 13 and the gear ring 14, so that the hot melt adhesive in the adhesive dripping channel 5 can be poured out and uniformly coated on the surface of the resistance wire insert;
the internal surface of a fixed section of thick bamboo 2 is provided with heating ring 20, the surface of a fixed section of thick bamboo 2 is provided with a plurality of stopper 17, the top threaded connection of stopper 17 has stop bolt 18, stop bolt 18's bottom is rotated and is connected with kicking block 19, rotation cover 16 has been seted up to stop 17's bottom.
In the invention, the use method of the hot melting equipment comprises the following steps: firstly, the heating wire is wound on the outer surface of the heating cylinder 4 in a spiral mode, then hot melt adhesive is dripped at the position of the adhesive dripping channel 5, so that the hot melt adhesive on the surface of the heating wire is solidified, thereby forming a resistance wire insert, meanwhile, the pipe fitting is sent into the fixed cylinder 2, the top block 19 is pushed out from the inner part of the rotating sleeve 16 by rotating the limiting bolt 18 and is contacted with the outer surface of the pipe fitting, thereby the pipe fitting is fixed in the fixed cylinder 2 and is fully contacted with the heating ring 20, the driving motor 6 is started at the moment, the driving motor 6 drives the threaded rod 8 to rotate, thereby the support plate 3 slides above the support frame 1, the sliding rod 10 slides in the through hole 9, further the resistance wire insert on the heating cylinder 4 is inserted into the pipe fitting, and then the heating cylinder 4 and the heating ring 20 are connected with an external power supply, thereby make cartridge heater 4 and heating collar 20 heat the hot melt adhesive on pipe fitting and resistance wire inserts surface, start rotating motor 12 this moment, make rotating gear 13 rotate, thereby drive cartridge heater 4 and rotate at the internal surface of rotating sleeve 16 through the meshing relation of rotating gear 13 with ring gear 14, through dripping gluey way 5 with the even internal surface of paining at the pipe fitting of hot melt adhesive, wait for the hot melt adhesive cooling shaping after, take out the pipe fitting can.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The processing technology of the extrusion type RTP composite pressure pipe fitting is characterized by comprising the following steps of:
step one, extruding an RTP composite pressure pipe: feeding a PE material into an extruder in a negative pressure mode, heating the PE material, extruding the inner layer of the pipe, winding a reinforcing belt on the inner layer of the pipe at the moment with constant tension to form a reinforcing layer, co-extruding the inner layer and the outer layer of the pipe, sizing after extrusion, and then spraying, cooling and forming;
step two, shaping and cutting: cutting the formed pipe into pipe fittings with fixed length;
step three, prefabricating resistance wire inserts: winding the resistance heating wire on hot melting equipment in a spiral mode, then coating a layer of hot melt adhesive on the outer surface of the resistance heating wire, and taking the resistance heating wire out of the surface of the shaping pipe after the hot melt adhesive is cooled, so as to obtain a resistance wire insert;
step four, installing resistance wire inserts: the resistance wire insert is arranged on the inner surface of the pipe fitting in a hot melting mode through hot melting equipment.
2. The process of claim 1, wherein the PE material is HDPE.
3. The processing technology of the extruded RTP composite pressure pipe fitting as recited in claim 1, wherein the reinforcing tape is formed by stranding fiber filaments, and the reinforcing tape is wound on the surface of the inner pipe at an inclination angle of 50-55 degrees.
4. The process as claimed in claim 1, wherein the PE material is heated at a temperature of 150-220 ℃.
5. The process of claim 1, wherein the screw extruding speed of the inner layer of the tube is 60-80 r/min.
6. The process of claim 1, wherein the diameter of the resistance wire insert is less than the inner diameter of the tube.
7. The process of claim 1, wherein the hot-melt apparatus is used by the method comprising: firstly, the electric heating wire is wound on the outer surface of a heating cylinder (4) in a spiral mode, then hot melt adhesive is dripped at a glue dripping channel (5), the hot melt adhesive on the surface of the electric heating wire is solidified, so that a resistance wire insert is formed, meanwhile, a pipe fitting is sent into the fixed cylinder (2), a top block (19) is pushed out from the inside of a rotating sleeve (16) by rotating a limiting bolt (18) and is contacted with the outer surface of the pipe fitting, so that the pipe fitting is fixed in the fixed cylinder (2) and is fully contacted with a heating ring (20), at the moment, a driving motor (6) is started, the driving motor (6) drives a threaded rod (8) to rotate, so that a support plate (3) slides above a support frame (1), a sliding rod (10) slides in a through hole (9), and the resistance wire insert on the heating cylinder (4) is further inserted into the pipe fitting, then be connected cartridge heater (4) and heating collar (20) with external power supply, thereby make cartridge heater (4) and heating collar (20) heat the hot melt adhesive on pipe fitting and resistance wire inserts surface, start rotating motor (12) this moment, make rotating gear (13) rotate, thereby the internal surface that drives cartridge heater (4) at rotating sleeve (16) through rotating gear (13) and the meshing relation of ring gear (14) rotates, paint the internal surface at the pipe fitting evenly with the hot melt adhesive through dripping gluey way (5), wait for the hot melt adhesive cooling shaping after, take out the pipe fitting can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110927542.3A CN113580588A (en) | 2021-08-10 | 2021-08-10 | Processing technology of extrusion type RTP composite pressure pipe fitting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618240A (en) * | 2022-01-24 | 2022-06-14 | 安徽紫朔环境工程技术有限公司 | Sectional type heatable porcelain filter tube |
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| CN114618240A (en) * | 2022-01-24 | 2022-06-14 | 安徽紫朔环境工程技术有限公司 | Sectional type heatable porcelain filter tube |
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Application publication date: 20211102 |